Timing issue?
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CF Beginner
Joined: Mar 2022
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From: Nicolaus California
Looks really good except cylinder #8 but with over 300000 miles, that's to be expected as normal even if it's over the 15% difference line between cylinders. #8 looks close at 130 PSI dry, however, but 110 PSI is too low.
They make additives that MIGHT help, if you have carboned up piston rings, in case that's an issue. But It's hit or miss with those cleaners. Sometimes they work well, sometimes they don't. Carbon is very hard, so some have you pour down the cylinder and let it soak in, before you run it. If I did that, I'd change the motor oil not long after to get all the sludge and carbon out of the engine.Even ACDelco sells a top end cleaner.
They make additives that MIGHT help, if you have carboned up piston rings, in case that's an issue. But It's hit or miss with those cleaners. Sometimes they work well, sometimes they don't. Carbon is very hard, so some have you pour down the cylinder and let it soak in, before you run it. If I did that, I'd change the motor oil not long after to get all the sludge and carbon out of the engine.Even ACDelco sells a top end cleaner.
etc. Thanks in advance
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